Synonyms|135Antonyms|0|Broader|6Narrower|0Related|196
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achromatic
0
ashes
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bituminous(adjective, dark, black)
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blackened
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bleak
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bootleg
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calamitous
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cinereal(heather, charcoal, starless)
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coal-black(adjective, dark, black)
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contraband
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coulee(noun, slag)
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dim
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disastrous
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disgraceful
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drab
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fatal
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fateful
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gray(heather, charcoal, starless)
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grey(heather, charcoal, starless)
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grim
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APASmart Define. (2015). obsidian thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/obsidian/thesaurus/synonyms
ChicagoSmart Define. 2015. "obsidian thesaurus" https://smartdefine.org/obsidian/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, obsidian thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/obsidian/thesaurus/synonyms>.
MLASmart Define. "obsidian thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/obsidian/thesaurus/synonyms>